Photovoltaics & Renewable Energy
Official Stäubli representative in Greece
NAS, as official Stäubli representative, delivers complete solutions for photovoltaic systems and renewable energy applications, leveraging the expertise of Stäubli, the global leader in DC connection technology. With 30 years of experience in the PV industry, Stäubli sets the international standards for quality, reliability and long-term safety across all project scales — from small installations to large utility-scale plants.
Credentials
30 years
with Stäubli
ISO 9001:2015
certified
204 MW
HELLENiQ ENERGY, Livera, Kozani
Member, Kozani Chamber of Commerce
Chamber of Commerce and Industry
Why connection quality matters
According to the FMEA Rating of PV Module Failures by TÜV Rheinland, failures in DC connections are among the most critical factors leading to:
- power losses
- increased temperatures
- fire hazards
- higher maintenance costs
- reduced system lifetime
In TÜV Rheinland’s ranking, mixing different connector types is by far the #1 cause of PV module failure — three times higher than front-glass breakage.
Connectors are the lifelines of a PV system. Using non-original or incompatible connectors dramatically increases failure risk and can compromise system performance for decades.
The Original MC4 — The global benchmark
The original MC4, engineered and manufactured by Stäubli in Switzerland, is the most widely installed PV connector worldwide and the industry standard for safe and reliable PV interconnection.
Key Features
Swiss precision and manufacturing quality
MULTILAM contact technology for low contact resistance
Minimal power loss and thermal stress
Certified to all major international standards
Long-term reliability in harsh environments
Protected trademark (MC4®)
MC4 & MC4-EVO Product Range
MC4 & MC4-EVO 2 connectors
Up to 1500 V
More
MC4-EVO 2000 connectors
Up to 2000 V
More
MC4-EVO Ready connectors
Fast, tool-free installation
More
In-line fuses
Protection with minimal energy loss
More
Branch connectors
Parallel or serial-parallel connections
More
Tools
For proper, certified assembly
More
Panel receptacles
Direct inverter / MLPE connection
More
MC4 & MC4-EVO 2 connectors
MC4
The MC4 is the original and most widely installed photovoltaic connector worldwide, engineered and manufactured by Stäubli in Switzerland. It is the industry benchmark for safe, reliable and long-term DC interconnection in PV installations of any scale. Powered by MULTILAM contact technology, it delivers exceptionally low contact resistance, minimal thermal losses and stable performance over decades.
Fully certified according to IEC and UL standards, the MC4 ensures maximum safety, durability in harsh environments and full compatibility with leading PV module manufacturers.
Technical specifications
| Cable cross-section | 2.5–10 mm² |
| Rated voltage | 1100 V DC (IEC 62852) |
| Rated current (TÜV) | 22.5 A (2.5 mm²) · 39 A (4/6 mm²) · 45 A (10 mm²) |
| Ambient temperature | −40 °C … +85 °C |
| Upper limiting temperature | 105 °C |
| Degree of protection | IP68 (mated) |
| Contact system | MULTILAM |
| Contact material | Copper, tin-plated |
| Certifications | TÜV, UL, IEC, Ammonia Resistance, Salt Mist Spray Test, CSA, CQC |
Assembly instructions (PDF, EL) · Catalogue (PDF, EN) · MC4 assembly video
MC4-EVO 2
Technical specifications
| Cable cross-section | 2.5–10 mm² |
| Rated voltage | 1500 V DC (TÜV) |
| Rated current (TÜV) | 39 A (2.5 mm²) · 45 A (4 mm²) · 53 A (6 mm²) · 69 A (10 mm²) |
| Ambient temperature | −40 °C … +85 °C |
| Upper limiting temperature | 115 °C (TÜV) |
| Degree of protection | IP68 (mated) |
| Contact system | MULTILAM |
| Contact material | Copper, tin-plated |
| Certifications | TÜV, UL, IEC, Ammonia Resistance, JET |
Assembly instructions (PDF, EN) · Catalogue (PDF, EN) · MC4-EVO 2 assembly video
MC4-EVO 2000 connectors
Stäubli MC4-EVO 2000 connectors are designed for photovoltaic systems up to 2000 V DC, meeting the requirements of modern utility-scale installations where higher string voltage reduces eBOS cost.
They belong to the MC4-EVO family and retain Stäubli’s MULTILAM contact technology.
Detailed specifications coming soon.
MC4-EVO Ready connectors
The MC4-EVO Ready from Stäubli is a factory pre-assembled PV connector designed for faster, safer and completely tool-free installation. It is part of the MC4-EVO 2 product family, offering full compatibility and certification according to IEC and UL standards.
Technical Specifications
| Cable cross-section | 2.5–6 mm² |
| Rated voltage | 1500 V DC (IEC 62852 / UL 6703) |
| Rated current | up to 35 A (depending on cable size) |
| Ambient temperature | −40 °C … +85 °C |
| Maximum operating temperature | 105 °C |
| Degree of protection | IP68 (mated) |
| Contact system | MULTILAM Advanced Contact Technology |
| Contact material | Tin-plated high-conductivity copper |
| Certifications | IEC, UL, TÜV, CSA, CQC, Ammonia Resistance, Salt Mist Spray Test |
Key Advantages
- Tool-free installation
- Factory pre-assembled to minimize field errors
- Fully compatible with the MC4-EVO 2 series
- Enhanced mechanical robustness for harsh environments
- Low contact resistance thanks to MULTILAM technology
- Ideal for utility-scale projects requiring speed and consistency
MC4-EVO Ready is Stäubli’s most advanced solution for fast, safe and certified PV cable interconnection.
Assembly instructions (PDF, EN) · Catalogue (PDF, EN) · Video
In-line fuses
Stäubli In-line Fuses are the most reliable protection solution for DC photovoltaic circuits. Designed for maximum safety, minimal power loss and full compatibility with MC4 and MC4-EVO 2 connectors, these fuses ensure stable operation and overcurrent protection in any PV installation.
With MULTILAM contact technology, they deliver extremely low contact resistance, high conductivity and long-term reliability even in harsh environments. They are the ideal choice for projects where safety, certification and long-term performance are essential.
Technical Specifications
| Rated voltage | 1500 V DC |
| Rated current | up to 30 A (model-dependent) |
| Fuse type | gPV (Photovoltaic Fuse Link) |
| Degree of protection | IP68 (mated) |
| Ambient temperature | −40 °C … +85 °C |
| Contact technology | MULTILAM |
| Contact material | Tin-plated copper |
| Compatibility | MC4 & MC4-EVO 2 |
| Certifications | IEC, UL, TÜV |
Branch connectors
Stäubli MC4-EVO 2 Branch Connectors are the industry-leading solution for safe and reliable parallel connection of photovoltaic strings. Designed for systems up to 1500 V DC, they offer high mechanical robustness, extremely low contact resistance and full compatibility with the MC4-EVO 2 product family.
With MULTILAM Advanced Contact Technology, they ensure stable conductivity, minimal thermal losses and long-term reliability even in harsh environments. They are the ideal choice for projects requiring certified, safe and efficient parallel interconnection.
Technical Specifications
| Rated voltage | 1500 V DC (IEC / UL) |
| Rated current | up to 35 A (model-dependent) |
| Connection type | Parallel connection (Y-connector) |
| Compatibility | MC4-EVO 2 |
| Degree of protection | IP68 (mated) |
| Ambient temperature | −40 °C … +85 °C |
| Maximum operating temperature | 105 °C |
| Contact technology | MULTILAM Advanced Contact Technology |
| Contact material | Tin-plated high-conductivity copper |
| Housing material | UV-resistant, weather-resistant polymer |
| Certifications | IEC, UL, TÜV, CSA, CQC |
Tools
Correct assembly matters as much as the component itself. Stäubli provides a complete range of certified tools for crimping, stripping, tightening, locking, testing and sealing contacts — in compliance with IEC/UL standards.
Crimping plier MC4 & MC4-EVO 2
PV-CZM-60100
High-precision hexagonal crimping with a factory-set ratchet for consistent pressure. The professional reference tool.
Crimping plier MC4 (basic)
PV-CZM-BS
Economical solution for occasional use and small quantities. MC4 only, for 2.5/4/6 mm². Not intended for continuous field use.
Stripping plier
PV-AZM-410
Accurate, clean and repeatable stripping with integrated blades and an adjustable length stop. For 4/6/10 mm².
Torque tool set
PV-WZ-TORQUE-SET
Certified 3–6 Nm torque tool with pistol grip, adapter and dedicated socket. Ensures IP68 sealing.
MC4 open-end spanner set
PV-MS
Locking and unlocking of connectors and safe tightening of the cable gland. Reinforced polymer, light and ergonomic.
MC4 / MC4-EVO 2 spanner set (PLS)
PV-MS-PLS
With Positive Locking System: guarantees the connector locks fully, preventing incomplete tightening.
Test plug
PV-PST / PV-EVO-PST
Safe, controlled unmating without damaging the safety clips or the housing.
PV cable cutter
PV-WZ-KS
Clean, straight cutting of PV cable — a prerequisite for correct stripping and crimping. Made in Germany.
Sealing caps
PV-BVK4 / PV-SVK4
Protects unused male and female contacts from moisture and dirt. 10 pcs per pack.
Complete tool case (32.6126)
The Stäubli PV Installer Tool Case SET (32.6126) is the official, complete professional toolkit for installing and servicing the entire Original MC4 and MC4-EVO 2 connector range, configured for 4 / 6 / 10 mm² open crimp contacts. It brings together all certified tools required for stripping, crimping, tightening, locking, testing and sealing.
Case dimensions: 444 × 350 × 118 mm plastic tool case
Case contents (12 items)
| 32.0716 | PV-BVK4 | Sealing caps for female contacts, 10× |
| 32.0717 | PV-SVK4 | Sealing caps for male contacts, 10× |
| 32.6028 | PV-PST | Test plug MC4 (position check) |
| 32.6073 | PV-EVO-PST | Test plug MC4-EVO 2 |
| 32.6066 | PV-MS-MC4-EVO 2 | MC4-EVO 2 unlocking tool |
| 32.6080 | PV-WZ-KS | PV cable cutter |
| 32.0065 | PV-WZ-TORQUE-SET | Torque tool set 3–6 Nm |
| 32.6020-60100 | PV-CZM-60100 | Crimping plier for MC4 & MC4-EVO 2 |
| 32.6081 | PV-LOC-MC4 | Locator for MC4 contacts |
| 32.6083 | PV-LOC-MC4-EVO 2 | Locator for MC4-EVO 2 contacts |
| 32.6027-410 | PV-AZM-410 | Stripping plier 4/6/10 mm² |
| 32.6058 | PV-MS-PLS | MC4 & MC4-EVO 2 spanner set |
Tools catalogue (PDF, EN) · Stripping plier instructions (PDF, EL) · Spanner set instructions (PDF, EL) · Video
Panel receptacles
MC4 panel receptacles are designed for fixed, permanent installation in metal or plastic panels, junction boxes, inverter housings and industrial applications. They provide a safe, reliable and certified MC4 interface with IP68 protection.
With MULTILAM contact technology, they deliver extremely low contact resistance, high conductivity and long-term reliability in harsh environments. They are the premium choice for professional applications requiring a panel-mount MC4 interface in full IEC/UL compliance.
Technical Specifications
| Application | Suitable for inverter use |
| Mounting | Direct mounting, nut-tightened |
| Cable cross-section | 2.5–10 mm² |
| Rated voltage | 1000 V DC / 1250 V DC (TÜV) |
| Rated current (TÜV) | 22.5 A (2.5 mm²) · 39 A (4 mm²) · 45 A (6 mm²) · 51 A (10 mm²) |
| Ambient temperature | −40 °C … +85 °C (TÜV) |
| Upper limiting temperature | 105 °C (TÜV) |
| Degree of protection | IP68 (mated) |
| Contact system | MULTILAM |
| Contact material | Copper, tin-plated |
| Certifications | TÜV, UL, CSA |
Why mixing connector brands is not allowed
Stäubli fully complies with all international standards governing PV interconnection and explicitly prohibits cross-connections between connectors from different manufacturers.
Legal and technical framework
| IEC 62852 (EN 62852) | PV connector product standard |
| UL 6703 | Connector product standard |
| UL 1703 | PV module standard |
| IEC 60364-7-712:2017 | PV installation standard |
| IEC 62548 | PV installation guidelines |
| — | Manufacturer assembly instructions |
“Male and female connectors shall be of the same type from the same manufacturer.”
UL certification applies only when connectors from the same product family and manufacturer are mated.
Is it worth the risk?
High-quality eBOS components reduce LCOE and increase project bankability.
Although DC connections represent only 0.003% of the total cost of a photovoltaic installation, using non-original MC4 copies provides a superficial saving of just 0.001%.
Non-original connectors may cost 30% less, but the financial benefit is negligible, while the risk of failure is significantly higher.
Risks: increased temperatures · power losses · premature system aging · fire hazards · higher maintenance costs · loss of certification and compliance
Is it worth the risk? The answer is clear: no.
Choosing original Stäubli MC4 connectors ensures maximum safety, reliability and long-term performance — with virtually no impact on total project cost.
Request a quote
Tell us about your project and we will propose the right Stäubli solution — genuine components, fully certified.
Call us directly:
24610 30328
24610 22178
Email:
nstylas@otenet.gr
Opening hours:
Monday – Friday, 09:00 – 19:00